Rear axle and wheel



Sept. 18, 1923.

. 1,468,593 E. M. ERB

AIR HEATING UNI T Filed Aug. 26 1922 Inu cnlor Edna/2a; 1% 15/0 Patented Sept. 18, 1 923.

- EDMUN nun-n, or nnsnr' orrr new nnsnr;

. 'i'i inicanunf iied Augu st: 26,l1822." Serial No.' 5's;,e;e.-

To aZZ uibniitz't mmg concemr Y I Be it known that I, En1siuN n'M. Ens; a citizen of: the United States, and resident of Jersey City, in thecountyof Hudson and 5 State of Nen'wlersey hm'e invented certain new and useful Improvements in Air-Heating Units,-o-Wliich thefollowing is aspeci-' fication. f

The inventionrelates iii-general to an electrically energized heating unit designed to be inserted infa' conduit-forthe purpose of heating m2 or-other gases pessing'therethr'ougln and thepresent disclosure consti- 'vide' a. heating-null; which ninj be readily initutes a division Ofld'lYfiODfillCllliQ' applica lion, 'SE-Il2tl -No. 527,390, Hair drying eppuratus,filed January 6, 1922. J In the al'iove identified application it is suggested that cold air be supplied to 'a nozzle at theend of nflexible conduit and: u

the invention will be in part obvious from 20 tlni-t'iiiezms' be provided in the nozzle-for heating the air-at will as itis discharged.

onto a. personisdien-d in the-act of waving the-hair thereon. It is required in; hair dressing work that dry, hot eir be supplied in largevolume and that all. portions of the air be uniformly heated otherwise a streamor core of cold air discharged with the hot on creates a'rery unpleasant sensation'on the head of the person sulnected to the drywhich unnecessarily addto' the Weight oi?" the large size'nozzlesused is ohe'ctionable in that .it is fatiguing; to the operator i120 handle a large heavy nozzle.

Accordingly the ipriniary-oliie'ct of the in-- -vei1'l:ioii is to provide it heating unit fo'r'such i at the same time nrovide suflicient heat dispensingsurface to raise 'to the requisite tem-' perature all or the air passing tl-ierethrough ere'n' ivhen supplied in large volumes per unit of time; 'i 5 thereof and accordingly-the. present disof the-axisof the air cylinder to g ii e the reqiusite hcatdispeusiug areaand at the same ing' treatineii t. On the other hand thenozzle Figure '3 is a transverse p 4 the direction indiciitedliy the arrows. nozzles which ulntn'ull belight in We ght and.

"are'intended to be as generic int-heir nppli- Air pessingthi'ough t conduit tends-tov form of cylindrical whirl about the ex swire. is disposed to follow the surface of" it Come and in' this way provides a heating ele-'- ment which will be spaced apart lengthwise tinie 'wlien viewed in cross-section, will constitute a screen disposed uniformly acrossthe entire cross-section of the-cylindrical pieced by a) similar insert without' necessity of breaking permanent electric connection or motile-ting either the nozzle or the-unit.

Yanous'other olnects and. advantages of air-inspection of the accompanying drawings andin'p-art'will he more fully set forth in the followingparticular description of one form of -mecha-nismfeinbodying my 'invention, and thoinvention also consists in certain newand-novel Ieetures of construction and combination of parts hereinafter set forth andclaime'd. v 1

In thenccoinpunyingdrawings:- 89 Figure-1 is a; detail View taken axiall through 'an i air dischargenozzle" and equipped with a heating unitconstituting epieferred embodiment of the invention;

Figure 2is a view of the insert shown in Figure 1 looking at the same frointhe right hand side; and 1 sectional View t'a-keiion the line of. Figure 1 looking in 00 ln'the followin-g description and'in the names for convenience of expression but they cation to similar parts as the art will per fmit. In the drawings there is shown aflexible conduit 44 to the end of which is fitted a. nozzle equipped with ef lieutiiig' unit '22 forihing a.- preferred form of the invention. lhe nozzle includes an. open ended outer tubular shell 43 preferably forined of some crably fornted of metal. 22 constitutes an insert which can be titted lhe hcatingdcvicc into the shell and readily removed therefrom as a unit to facilitate the repair or substitution of the same. The heater includes a frame formed at the end adjacent the flexible section of a circular mounting ring or wheel t6 which has a snuglit in the shell; and is secured thereto by inset screws H. The ring ircludcs diametrically extending" bridge piece 4-8 the center otwhich is enlarged to for-1n a hub 4:9. The hub 49 constitutes a support tor an axially positioned conducting rod 50. insulated from the hubby means of insulating bushings One end of the rod extends from t-herina t-OWEHClS the flexible section and forms a binding post 52. -Th9, ln-idae its also carries a similarly mounted binding post rod 50 adjaccijit the discharge end of the nozzleis provide-cl wit-ha head 5% secured to the red by nuts which-also act as a binding; screw. A-plurality of flat mica plates 5.6 extend radially from the rod 50 as shown in- F'ie'ure 3,- are. positioned between the iuoiuiting'ring 4L6 and the head ("it-as shown in Figure 1 andare each of triangular form. The free edges 56 of each of the mica plates are prorided y with. longitudinal spaced notches 57. A. heating conductor 59 in the form of a wire having high resistance is connected at one end to the binding post 53-, is wound spirally and in the form of acone about the edges of the plates from the mounting ring to the head. .The outer end or": the wire is connected'to the binding screw o5 and the circuit is completed back to the binding post 52 through the conduc ing rod 54) which for this purpose is formed of metal. It is noted. that the conical formation of the heating wire spaces the turns of the wire not only along the length of the conduit considered axially of theshel-l as shown in Fia'ure 1. but als'o'spaccs the turns when considered radially of the as shown in Figures 2 and 3. Int-his way air spaces 58 are formed in the screen which may thus beconsidered as extending en'- tirely acrossthe bore of the shell. In this way there is provided a Free passageway for the air but all part-s of the air-will necessarilyconie in contact with or pass relatively close to some part of the hot wire before the air s passed from the nozzle.

l'i hilo I have shown and described, and

have pointed out in the annexed claims,' cer tainnovel features of myinvention, it will he understood that various omissions, .substitutions and chances in the form and details oi. the device illustrated and in its operation may be made. by those skilled in the The opposite'end of? the art without departing from the spirit of the invention.

Having thus described 'my invention, I claim: A

l. A heating unit constituting an insert. adapted. to. be placed in a gas. conduit to heatthe as it is passed therethrough, said unitinchiding a frame 'formed of a circular niounting i'ing having a diametricallyeXtend-ing bridge piece, an axially positioned conducting rod secured to and insulated from the bridge piece, with the end adjacent the bridge. constituting a binding post a coil of heating wire wrapped spirally about the rod and with one end of the wire connected electrically to the red at the end rali.ty ol' plates extending radially of the rod and spaced apart circ-uin'terentially the-cot," a heating wire connected elect-r1- cally to the rod. at the opposite end and wriqaped spirally about'the outer edges of the plates and means for supplying electric current to the end of the wire opposite the end connected to the roch 3. an airdischarging nozzle including a hcatinsulatn-ig tubular shell. constituting a handle for l'ioldi n 1 the nozzle and air heating means positioned in said shell. said heating means includinga'screen of electric conductors capable of being heated when electric current is passed the-rcthrough, said conductors being spaced apart considered transversely of length of the nozzle to permit the air to pass thcretlu'ough as it is discharged trointhe nozzle and spaced from the handle to maintain an air space in the nozzle between the heating means and heat insulating handle.-

a. An. air heating device including a circular mounting ring provided with a landing post} aicouducting rod extending axially in one direction from the ring, a support carried by the rod, a conductor wrapped spirallyabout the support and .connectec at one audio theconducting rod and connected at the other end to said binding post. i 5/ In a device of the class described, the combination of a rod, a plurality of plates extending; radially from said rod, said plates each" converging in width from one end to the other, said plates provided with notches on their tree edges and a conducting wire wound spirally about the plates and engaging in the notches;

6. A, hcatingpnnit adapted to constitute an thcrethrough said unit ii'icludinga conductopposite the bridge piece and a second biud-- iao in partitions adapted to meet with the 0011-; an extension of the conducting element of 10 dint to provide lengthwise passageways for the frame. w i

the gas to be heated, a heating ire wrapped Signed at New York city. in the county spirelb about the frame along the length of New York and State of New York, this thereof and a pair of binding posts seeured"'l8th day of August, A.'D. 1922.,

to said frame, confined within the 'longitw EDMUND .M. EBB.

dinally projected outlines thereof connected \Viti esses: electriczilly to theends or the heating wire P. TAFFE, and one of said binding posts eonstit itin'g 4 .E..UNGER. Q 

